Suppose a perfectly competitive firm's minimum average variable cost is $3 when it produces 50 units. If the price is $2 and the firm's marginal cost is $2, the firm should:

A. Continue to produce, but produce less than 50 units.
B. Continue to operate, but to determine the amount of production needs more information than is given.
C. Shut down.
D. Continue to produce, but produce more than 50 units.
E. Continue to produce 50 units.